RF Heated Diodes for Magnetic Memory Thermal Switching
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Solution Overview
Problem
Conventional magnetic memory elements require high voltage to heat diodes for thermal-assisted switching, which is costly and inefficient.
Innovation Solution
Magnetic memory structures where diodes are heated by absorbing energy from nearby radio frequency electromagnetic fields, allowing thermal assistance in switching magnetic states with reduced voltage application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high voltage is applied to heat diodes for thermal-assisted switching, then magnetic state switching is achieved, but energy consumption increases and cost rises
Solution Approach 1:
The patent replaces the conventional electrical heating method (applying high voltage directly to diodes) with electromagnetic field heating (using radio frequency fields to heat the diodes). This substitution reduces the voltage requirement from high voltage to lower voltage while maintaining the thermal-assisted switching function, thereby resolving the contradiction between switching reliability and energy consumption.
Solution Approach 2:
The patent changes the heating mechanism parameter from direct electrical heating (high voltage) to electromagnetic field heating (radio frequency). This parameter change allows the diodes to be heated to the required temperature for thermal-assisted switching while using lower voltage, thus improving energy efficiency without sacrificing switching reliability.
2Reliability
If high voltage is applied to heat diodes, then thermal assistance for switching is provided, but operational cost increases
Solution Approach 1:
The patent substitutes the high-voltage electrical heating system with a radio frequency electromagnetic field heating system. This substitution maintains the thermal assistance needed for reliable magnetic state switching while reducing the voltage requirement and associated operational costs, making the system more cost-effective.
3Productivity
If conventional heating methods are used, then magnetic memory elements can be switched, but efficiency decreases
Solution Approach 1:
The patent replaces conventional high-voltage electrical heating with radio frequency electromagnetic field heating. This substitution improves energy efficiency because RF heating can more selectively and efficiently heat the diodes to the required temperature, reducing overall energy consumption while maintaining switching efficiency.
Solution Approach 2:
The patent changes the heating parameter from direct electrical current heating to electromagnetic field absorption heating. This parameter change enables more efficient energy transfer to the diodes, improving the overall energy efficiency of the thermal-assisted switching process while maintaining the required switching performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable magnetic state switching with reduced voltage, improving efficiency and cost-effectiveness in thermally-assisted magnetic memory operations.
Implementation Method 1
A diode near a selected magnetic memory element can be heated by absorbing energy from nearby radio frequency electromagnetic fields
Data Source
AI summary
An exemplary array of thermally-assisted magnetic memory structures includes a plurality of magnetic memory elements, each magnetic memory element being near a diode. A diode near a selected magnetic memory element can be heated by absorbing energy from a radio frequency electromagnetic field. The heated diode can be used to elevate the temperature of the selected magnetic memory element to thermally assist in switching the magnetic state of the magnetic memory element upon application of a write current.